* date/time of the dia.zip creation (by make.py) is now saved in
file zip_build_date.py, which is stored in the root directory of
the dia.zip file. The line "from zip_build_date import DIA_ZIP_BUILD_DATE"
causes DIA_ZIP_BUILD_DATE to be a string like "2013-02-06T20:58:45Z". This is
used by the "build_date" channel of the info_device driver.

* new InfoDevice, which allows the users to add static Dia data channels
such as name, version, build_date, and so on.

* Xbee Sensor driver (for L\T\ and \L\T\H Sensor) have settings added to support use of
degrees Fahrenheit and adding a calibration offset.

* Added the 'calls' tracer level to ESP smart editor files. Is lower than 'debug', for
use with very simply 'method entry' messages useful when debugging
inheritance issues.

* Changed the RCI handler to accept multiple commands within a single
<do_command> block. Commands are executed from top to bottom. Previous
commands can affect the state of subsequent commands. Failed commands
do not affect the state of other commands.

* Documentation updates

* Presentations

* The RCI presentation will not accept and process multiple
commands in a single payload.